so, like many of you probably, I have like a bazillion of ideas and emails for every kind of startup-idea I am trying to push out.
I found it (very early on) necessary to have a "corporate" domains for each idea with the domain. At least not a generic gmail.com domain. But its also not feasible to register always with google business (or anything else) for $5/user just for having my own domains. It quickly adds up.
So, I was looking into different alternatives and found the sweet spot for me with a part of sovereign  and a cheap scaleway  instance.
I was looking into mail-in-a-box, but decided it really isn't for me, because I want to do some customizations on my own - including a few websites I want to let run there.
Still, having the own server means maintenance etc. I wouldn't call myself a great sysadmin either. Mailserver setup was (and still is) one of the biggest questionmarks for me and, while analyzing the sovereign ansible scripts, it really shed some light on it, I still think I just scratched the surface. Especially with spamfilters, virusscanning, greylisting, etc. I think I was able to setup everything correctly, but hey, one little update and I am f*'d, right?!
The question is now: I can't possibly be the only one with that struggle of price/time/difficulty/...
How do you handle that?